Added examples dnssec-rollover.sh

automation/dnssec-rollover.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+ZONE="example.tld"
+ROOT_SERVER="a.root-servers.net"
+KEYDIR="/var/lib/bind"  # Adjust if needed
+LOGFILE="/var/log/namingo/dnssec-rollover.log"
+
+echo "[$(date)] Checking IANA root zone for DS update..." | tee -a $LOGFILE
+
+# Fetch DS records from IANA root zone
+root_ds=$(dig +short DS $ZONE @$ROOT_SERVER | awk '{print $1, $2, $3, $4}')
+if [[ -z "$root_ds" ]]; then
+    echo "[$(date)] ERROR: Unable to fetch DS records from IANA. Exiting." | tee -a $LOGFILE
+    exit 1
+fi
+
+# Fetch DS records from BIND (local KSKs)
+local_ds=$(dnssec-dsfromkey -2 $KEYDIR/K${ZONE}*.key | awk '{print $1, $2, $3, $4}')
+if [[ -z "$local_ds" ]]; then
+    echo "[$(date)] ERROR: Unable to fetch DS records from BIND. Exiting." | tee -a $LOGFILE
+    exit 1
+fi
+
+echo "[$(date)] DS records at IANA:" | tee -a $LOGFILE
+echo "$root_ds" | tee -a $LOGFILE
+echo "[$(date)] DS records in BIND:" | tee -a $LOGFILE
+echo "$local_ds" | tee -a $LOGFILE
+
+# Step 1: Check if IANA DS matches BIND DS (safe transition condition)
+if [[ "$root_ds" == "$local_ds" ]]; then
+    echo "[$(date)] IANA has updated DS record. Safe to retire old KSK." | tee -a $LOGFILE
+
+    # Step 2: Identify and remove old KSKs from BIND
+    for key in $(ls $KEYDIR/K${ZONE}*.key); do
+        key_ds=$(dnssec-dsfromkey -2 $key | awk '{print $1, $2, $3, $4}')
+        
+        if [[ ! "$root_ds" == *"$key_ds"* ]]; then
+            echo "[$(date)] Removing old KSK: $key" | tee -a $LOGFILE
+            rndc dnssec -clear key $ZONE
+            echo "[$(date)] Old KSK $key removed successfully." | tee -a $LOGFILE
+        fi
+    done
+else
+    echo "[$(date)] DS record mismatch! Keeping old KSK active. Retrying later..." | tee -a $LOGFILE
+fi